function myPopUp(url, myname, wd, ht)
{
	var PopUp;
	myleft = ((screen.width-wd)/2);
	mytop = ((screen.height-ht)/2);
	settings="width=" + wd + ",height=" + ht + ",top=" + mytop + ",left=" + myleft + ",menubar=no,toolbar=no,directories=no,location=no,status=no,scrollbars=no,rezizable=yes";
	PopUp = window.open(url, myname, settings);
	PopUp.focus();
}